public class H1{

  public static void main(String[] args){
	double a=33.6;
	double b=20;
	System.out.println(countAdd(a,b));
	System.out.println(countMin(a,b));
	System.out.println(countMul(a,b));
	System.out.println(countDiv(a,b));



  }


  public double countAdd(double a,double b){
  	return a+b;
  }

  public double countMin(double a,double b){
  	return a-b;
  }
  public double countMul(double a,double b){
  	return a*b;
  }
  public double countDiv(double a,double b){
	return a/b;
  }




}
